Oho, if we're bringing legality into it then I'm sure we're both talking about terms of service. The intent on the rule has been made abundantly clear. It doesn't have to spell out every which way the rule can possibly be broken.

If you can prove the users in question have multiple service accounts, then you may very well have some ground to stand with that claim of yours, but the likelihood is that these characters belong to the same service accounts and are merely being removed from the FC to purchase land to then be reinvited to the very same FC they were removed from.

This action is clearly intended on infringing upon the the rule and as such the terms of service, which while not punishable by law is in fact legal grounds for the other side of the agreement to take action to annull the agreement.